1 Dorsal fins are found on the back of the fish. 2  There may be up to three of them. 3  The fish uses this fin for balance in the water and sudden movements. 4  Caudal fins are also known as tail fins.5  This is what we refer to as the fish's tail. 6  Anal fins are on the ventral (bottom) surface of the fish, behind the anus. Dorsal fins are found on the back of the fish. 2  There may be up to three of them. 3  The fish uses this fin for balance in the water and sudden movements. 4  Caudal fins are also known as tail fins.
The oxidation number for phosphorus is +3: four covalent bonds with oxygen atoms yield +4 and the central charge yields -1. The oxidation numbers of oxygen and hydrogen are -2â¦ and +1 respectively. The oxidation number of the overall ion is -1.
Oxidation number of P in H3PO3 is +3. To calculate the oxidation number H= 1 except when bonded to metal O is -2 except when bonded to F The sum of all of the oxidation â¦ number on a molecule /ion is equal to the charge so as H3PO3 is a neutral molecule:- 0 = OxP + 3OxH + 3OxO = Oxp + 3 + (-6) Oxp = +3 H3PO3 is phosphorus acid.